rmccullagh / libvirt-automount

This is a libvirt hook that will automatically mount your file systems in /mnt/$name

libvirt-automount

This is a libvirt hook that will automatically mount your file systems in /mnt/$name This code makes a lot of assumptions, but can be quickly changed to meet your needs.

Problem

Running hooks to mount a remote file system after a libvirtd daemon sends in a started hook doesn't work right away, since sshd on the VM must be started, and that doesn't happen as soon as libvirtd sends this hook.

Solution

Use the started hook to launch a script that calls into a C program that immediately forks, and exists the parent. The C program then calls execlp('qemu-start-wrapped');

Assumptions

• The name of your VM, which is passed to your hook from libvirtd has a resolved name. For example, virtual machine with name (domname) dns, can be resolved on your machine. This can be accomplished by simply editing your /etc/hosts file.

Quick start

To get started, Edit qemu-start-wrapped and replace ryan and IdentityFile with correct values

Ensure up SSH key validation on the virtual machine, password login is not supported

1. git clone https://github.com/rmccullagh/libvirt-automount
2. cd libvirt-automount
3. gcc -Wall -Wextra mount-sshfs.c -o mount-sshfs
4. sudo cp mount-ssfs /etc/libvirt/hooks/
5. sudo cp qemu /etc/libvirt/hooks
6. sudo cp qemu-start-wrapped /etc/libvirt/hooks
7. sudo systemctl restart libvirtd.service

You can tail -f /var/log/syslog to see the messages written.